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. Author manuscript; available in PMC: 2011 May 1.
Published in final edited form as: Pharmacol Biochem Behav. 2010 Feb 16;95(3):298–307. doi: 10.1016/j.pbb.2010.02.005

Figure 1.

Figure 1

Mean (+SEM) numbers of 22 kHz ultrasonic vocalization (A) that the rats made throughout the habituation, seven CAR training days and three drug-free test days. * p<0.05 significantly different from the vehicle group.